rev
4. Finish the equation and give the typ
1. 231 Pa →
91
192 Ir +
77
Fission or fusion

The density of the liquid is 0.79.

Density can be determined by the ratio of mass and volume of a particular substance. It can be denoted by the symbol d. The concept of density is crucial because it enables us to predict which compounds will float and which ones will sink in a liquid. As long as an object's density is lower than that of the liquid's density, it will often float.

Density can be determined by the formula:

Density = mass / volume.

Given data:

Volume = 35.20mL

Mass = 28.54 g

Put the values of given data in above formula:

Density = 28.20 / 35.54

Density = 0.79 m³

Therefore, the density of the liquid will be 0.79.

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The density of a liquid if a 35.2 mL sample has a mass of 28.548 g is 0.811 g/mL.

What is density?

Density is defined as the mass of the substance per unit of volume. It can be understood by the mass of a substance divided by its volume. Density is denoted using symbol ρ. Density of a liquid can be calculated by -

                                      ρ = m

                                             v

where,

ρ = density

m = mass

v = volume

Density is a physical property of a matter. Higher the density of a substance, higher will be its mass and volume. As long as an object's density is lower than that of the liquid's density, it will often float.

To calculate density of given liquid -

we have,

mass = 28.548 g

volume = 35.2 mL

Using the formula,

         Density =   mass  

                           volume

                    ρ = 28.548

                            35.2

                    ρ = 0.811 g/mL

Therefore, density of liquid is 0.811 g/mL or m³

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The appearance of the solution may change slightly, depending on the initial color of the solution and the solubility of the products formed.

If 6 M NaOH is added instead of 6 M NH₄OH, the solution would become more basic. NaOH is a stronger base than NH₄OH and therefore would react more strongly with the K₂C₂O₄.

Balanced chemical equation for the reaction between K₂C₂O₄ and NaOH will be;

K₂C₂O₄ + 2NaOH → 2KOH + Na₂C₂O₄ + H₂O

As NaOH is added to the solution, it will react with K₂C₂O₄ forming Na₂C₂O₄, KOH and water. This will result in the production of more hydroxide ions, which will increase the pH of the solution.

However, the increase in pH will be noticeable and the solution may become more cloudy due to the formation of a precipitate of Na₂C₂O₄.

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Answer:

6.5 octillion (that's 6,500,000,000,000,000,000,000,000,000) atoms.

Explanation:

:)

Answer:

Explanation:

the temperture of the warmer water will make it have more space and have less density in the water.

Answer:

The answer is

Explanation:

To find the number of atoms of titanium , given it's number of moles we use the formula

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question

n = 0.075 mol

We have

N = 0.075 × 6.02 × 10²³

We have the final answer as

Hope this helps you

The evolution of stars with masses greater than around 8M is different from that of the Sun is D. All of these answers describe the differences between the masses

A star with a mass greater than the sun, for example, must rely on various fusion reactions to create energy after it has exhausted the hydrogen fuel in its core. Such stars, with masses of 8M or more, burn helium and then carbon, nitrogen, and oxygen in their core, but they are unable to burn any heavier elements.

Unlike less massive stars, they have no mechanism to resist the gravitational force that pushes the core inward once all fusion has ceased, leading to a cataclysmic implosion. This leads to the creation of a neutron star or, in more massive instances, a black hole. So therefore their cores do not experience electron degeneracy between fusion cycles, fusion of elements heavier than helium occurs, and they end up as a neutron star or a black hole instead of a white dwarf describe star is differences from the evolution of the Sun, so the correct answer is D. All of these answers describe the differences between the masses.

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The table organizes the elements by atomic number, which corresponds to the number of protons in each atom. However, the table's creator, a 19th-century Russian chemistry professor named Dmitri Mendeleev, was not aware of protons or atomic numbers at the time of his creation.

The organization of elements in the periodic table by atomic number is based on the number of protons in each atom. However, it is interesting to note that the table's creator, Dmitri Mendeleev, was unaware of the concept of protons or atomic numbers during the development of the table in the 19th century. Mendeleev instead organized the elements by their chemical and physical properties, and it was later discovered that this arrangement correlated with the elements' atomic structure. Despite his lack of knowledge of protons and atomic numbers, Mendeleev's organization of the periodic table remains a foundational tool in chemistry today.

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The conjugate acid-base pairs in the reaction HBr(aq) + \(NH_3\)(aq) ⇔\(Br^-\)(aq) + \(NH_4^+\)(aq) are HBr/\(NH_4^+\) and \(NH_3/Br^-\).

In the given reaction, HBr acts as an acid, donating a proton (\(H^+\)) to \(NH_3\), which acts as a base. As a result, \(NH_3\) gains a proton to form its conjugate acid, \(NH_4^\). In this acid-base pair, \(NH_4^\) is the conjugate acid since it is formed by accepting a proton from HBr.

Conversely, HBr loses a proton and becomes its conjugate base, \(Br^-\). Thus, \(Br^-\) is the conjugate base of HBr. The reaction can proceed in both directions, indicating the reversible nature of the acid-base reaction, with the formation of the conjugate acid-base pairs \(NH_4^+/Br^-\) and HBr/\(NH_3\).

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Based on ecological studies, the definitions below applies to the given terms:

Ecology is the study of living things and their interactions with their environment.

Some terms in ecology include:

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Answer:

Explanation:

When Iron is dipped in Aluminium Chloride, a redox reaction occurs. Basically iron reacts with Chloride ion and forms a solid precipitate of Aluminium.

End result :Iron (II) Chloride forms and Aluminium forms the precipitate

ANSWER:

They contain two or more elements in fixed ratio to each other

Explanation:

A compound is a substance formed when two or more chemical elements are chemically bonded together. The type of bonds holding elements together in a compound can vary. Two common types are covalent bonds and iconic bonds. The elements in any compound are always present in fixed ratios.

The mass of oxygen required to react with calcium to produce 44.8 g of calcium oxide is 12.79 grams.

The reaction between Calcium and Oxygen produces calcium oxide which is represented as

2Ca + O2 = 2CaO

According to the above reaction

1 mole of O2 produces 2 moles of CaO

Or 112 grams of CaO is produced by 32 grams of O2

1 gram of CaO is produced by 32/112 grams of O2

Hence 44.8 g of CaO is produced by 32/112 x 44.8 = 12.79 grams of O2

Therefore, the mass of oxygen required to react with calcium to produce 44.8 g of calcium oxide is 12.79 grams.

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Answer:

Arrange them in order of greatest to least Molar Mass to get most dense to least dense at a given temperature and pressure.

Explanation:

"Given Temperature and Pressure" just tells you that those two variables are being held constant. The Ideal Gas Law (PV = nRT) shows that n (the # of moles) and V (the volume) are variable still. To keep pressure constant, we need to increase the volume so that the force per area is the same which would unfortunately lower the density. The only way for a gas to have the greatest density would be to have the least average kinetic energy to keep the pressure constant at a smaller volume. This is because kinetic energy is equal to KE = 1/2 m v^2, where m is mass in kilograms and v is the velocity. IT IS CRUCIAL TO NOTE THAT ACCORDING TO KINETIC MOLECULAR THEORY, ALL GASES HAVE THE SAME AVG. KINETIC ENERGY WHEN AT THE SAME TEMPERATURE. So since the avg. KE is also constant across these answers due to the temp. being constant, our only way to decrease the velocity (the rate at which the particles are moving per second) and in turn the number of collisions (to repeat, a smaller number of collisions is desired because they are equal to the pressure that must maintained at a constant value at the smallest volume possible to achieve highest density possible) is to increase the molar mass. This is also pretty intutive for the other part of the issue: since Density is a broken heart (m/v), a higher molar mass would ensure a smaller pressure (due to decreased velocity) and smaller volume (due to constant pressure). Okay, now order the gases heaviest to lightest in terms of molar mass and you got your answer. Please gimme brainliest if this helped bc it took 15 minutes to type out. Hope this helped you! :D

Density is an intensive property as it does not depend on the quantity of the substances Whereas mass and volume are extensive property. The order of density is carbon dioxide>Neon >argon>carbon-12> hydrogen.

Density tells about the compactness of the substances, how much dense is the substances in other words. Object that is more denser than water they just sink in the water.

Mathematically,

Density of gas  = Molar Mass of the gas  ÷volume occupied by the given gases

Density is directly proportional to molar mass of the gases.

Molar mass of argon = 18g/mole

Molar mass of Neon = 20g/mole

Molar mass of carbon dioxide=44.01 g/mol

Molar mass of hydrogen=1g/mol

Molar mass of carbon-12=12g/mol

The order of gases from most dense to least dense at a given temperature and pressure is carbon dioxide>Neon >argon>carbon-12> hydrogen.

Therefore, the order of density is  carbon dioxide>Neon >argon>carbon-12> hydrogen.

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The acid ionization constant (Ka) for the  0.142 M solution of a monoprotic acid is 3.69 x 10^-5.

To solve this problem, we need to use the formula for percent dissociation, which is defined as:

% dissociation = (concentration of dissociated acid / initial concentration of acid) x 100%

We can also use the acid ionization constant (Ka) to represent the degree of dissociation of the acid in solution. Ka is defined as:

Ka = [H+][A-] / [HA]

where [H+] is the concentration of hydrogen ions, [A-] is the concentration of the conjugate base, and [HA] is the initial concentration of the acid.

Given that the percent dissociation of the acid is 1.60%, we can calculate the concentration of the dissociated acid using the following equation:

% dissociation = (concentration of dissociated acid / initial concentration of acid) x 100%

1.60% = (concentration of dissociated acid / 0.142 M) x 100%

Solving for the concentration of dissociated acid, we get:

concentration of dissociated acid = 0.00227 M

Since the acid is monoprotic, the concentration of the conjugate base is also 0.00227 M. Therefore, the concentration of the undissociated acid is:

[HA] = 0.142 M - 0.00227 M = 0.1397 M

Now we can substitute these values into the expression for Ka:

Ka = [H+][A-] / [HA]

We know that the concentration of hydrogen ions is equal to the concentration of the dissociated acid, which is 0.00227 M. We also know that the concentration of the conjugate base is also 0.00227 M. Substituting these values, we get:

Ka = (0.00227 M)^2 / 0.1397 M = 3.69 x 10^-5

Therefore, the acid ionization constant (Ka) for the acid is 3.69 x 10^-5.

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The partial pressure of CO(g) at equilibrium is approximately 5.0 bar.

To calculate the partial pressure of CO(g) present at equilibrium, we need to consider the reaction between FeO and CO to form Fe and CO2:

FeO(s) + CO(g) ⇌ Fe(s) + CO2(g)

Given that an excess amount of FeO is reacted, we can assume that FeO is completely consumed in the reaction, resulting in the formation of Fe and CO2 until equilibrium is reached.

Since only CO(g) is provided, the reaction will shift to the right to consume the CO and form CO2. To determine the partial pressure of CO(g) at equilibrium, we need to apply the ideal gas law and consider the equilibrium constant (Kp) for the reaction.

The equilibrium constant expression for the reaction is given by:

\(Kp = (P_CO2) / (P_CO)\)

We are given that the total pressure is 5.0 bar, but we don't have information about the initial pressures of FeO and CO2. However, since FeO is in excess, we can assume that the pressure of CO2 at equilibrium is negligible compared to the initial pressure of CO.

Therefore, we can approximate the partial pressure of CO(g) at equilibrium as:

P_CO = Total pressure - P_CO2

P_CO = 5.0 bar - 0 (negligible)

P_CO = 5.0 bar

Hence, the partial pressure of CO(g) at equilibrium is approximately 5.0 bar.

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The partial pressure of CO(g) at equilibrium is approximately 5.0 bar.

The equilibrium of the reaction between FeO(s) and CO(g) to form Fe(s) and \(CO_2\)(g) can be represented as:

FeO(s) + CO(g) ⇌ Fe(s) + \(CO_2\)(g)

Given that an excess amount of FeO is reacted, we can assume FeO is completely consumed in the reaction, resulting in the formation of Fe and \(CO_2\) until equilibrium is reached.

The equilibrium constant expression (Kp) for the reaction is:

Kp = [\(CO_2\)] / [CO]

Since only CO(g) is provided, the reaction will shift to the right to consume CO and form \(CO_2\). To determine the partial pressure of CO(g) at equilibrium, we need to apply the ideal gas law.

Given that the total pressure is 5.0 bar, and assuming the pressure of CO2 at equilibrium is negligible compared to the initial pressure of CO, we can approximate the partial pressure of CO(g) at equilibrium as:

\(P_{CO}\) = Total pressure - \(P_{CO2}\)

\(P_{CO}\) = 5.0 bar - 0 (negligible)

\(P_{CO}\) = 5.0 bar

Therefore, the partial pressure of CO(g) at equilibrium is approximately 5.0 bar.

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Solution is the term which best describes mixture A which was made by mixing different components together but has only one phase.

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Answer:

protons=atomic number

electrons=atomic number-charge

proton=atomic mass-atomic number

Answer:

Well, Aluminum Oxide has a very high melting point. Carbon dioxide has a very low boiling point.

Explanation:

They are both talking about different things, melting and boiling. Aluminum Oxide's melting point is much higher then carbon dioxide's melting point. Hope this help, and good luck on your assignment (if one)

The molarity of the NaOH(aq) solution is 0.156 M.

The balanced equation for the reaction between sulfuric acid and sodium hydroxide is H₂SO₄(aq) + 2NaOH(aq) → Na₂SO₄(aq) + 2H₂O(l). From the balanced equation, it can be deduced that the mole ratio of NaOH to H₂SO₄ is 2:1. Hence, the moles of H₂SO₄ reacted = Molarity of H₂SO₄ × Volume of H₂SO₄ used in liters = 0.220 M × 0.03230 L = 0.007106 moles.

Using mole ratio, the moles of NaOH reacted = 2 × 0.007106 = 0.01421 moles. Molarity of NaOH = Moles of NaOH / Volume of NaOH used in liters= 0.01421 moles / 0.04630 L = 0.306 M or 0.156 M (rounded off to three significant figures). Thus, the molarity of the NaOH(aq) is 0.156 M.

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Answer:

The correct answer is Hollow Sphere.

Answer:

............................

Explanation:

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When hex-3-yne reacts with one equivalent of HCl, the major product is 3-chlorohex-1-ene. This is because the HCl adds across the triple bond in a regioselective manner, following Markovnikov's rule.

The major product for the reaction of hex-3-yne with one equivalent of HCl is 3-chlorohexene. The HCl adds to the triple bond, breaking the π-bond and forming a new σ-bond between the H and the C.

The addition occurs through a Markovnikov addition, meaning the Cl attaches to the carbon with more hydrogens already attached. This is because the positive charge on the intermediate carbocation is stabilized by the additional hydrogens.

The mechanism for the reaction involves protonation of the triple bond to form a carbocation intermediate. The HCl then adds to the carbocation to form the final product. Here is the drawn structure of the major product: H H | | H-C=C-C-C-H + H-Cl --> H-C-C=C-C-H | | | H H Cl

Note that the stereocenter at the third carbon is not affected in this reaction. This transformation is an example of an addition reaction, where a molecule is added to a double or triple bond, resulting in the formation of a single bond.

The reaction is a hydrohalogenation, and the transformation results in breaking the triple bond and forming a new single bond between the carbon and the chlorine atom.

This type of reaction is very important in organic chemistry, as it allows for the synthesis of a wide variety of compounds.

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Answer:

b

Explanation:

The molarity of the soap solution used in the titration reaction is 0.003 M

The molarity of the soap solution can be obtain as shown below:

MaVa / MsVs = Mole ratio

(0.5 × 15) / (Ms × 25) = 1

0.075 / (Ms × 25) = 1

Cross multiply

Ms × 25 = 0.075

Divide both side by 25

M = 0.075 / 25

Ms = 0.003 M

Thus, we can conclude that the molarity of the soap solution is 0.003 M  

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When there is an overpressure condition, operators may be required to take various steps, such as the following:

The following are some of the qualifications that are required for an operator:

Operators may also be required to follow established procedures for dealing with overpressure conditions in order to maintain safety and prevent equipment damage.

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It means that the air near the Earth's surface is denser compared to the other parts.

99.9% of the air particles are found in the lower part of the atmosphere because the air in this region is denser than the other regions.

Air density increases with increased pressure and as we move up in altitude, air pressure decreases.

Thus, as air pressure decreases with height, the density of air also decreases. This is why most of the air particles are found in the lower part of the atmosphere.

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